No Toil Filter sealing concern

This is not specific to any bike. But for 20 years i have been using belray filter oil and filter cleaner. Ridden a lot and used to race to. Not once did i have any issue with dirt ingestion on a single bike i have owned. I usually have a min of 2 filters per bike so i can install a clean one while servicing the dirty filter. I have also never had a bad filter and bought many Twin air brand name filters for many bikes. The dust level where i ride can be extreme to say the least. And group rides are so dusty. I am choking and spitting up dust for 12 hours after a ride many times.....bike was always fine.